Numerical analysis for LE-9 engine turbopumps
JAXA Supercomputer System Annual Report April 2020-March 2021
Report Number: R20EK2305
Subject Category: Space Technology
- Responsible Representative: Masashi Okada, Project manager, H3 Project Team
- Contact Information: Atsuhiro Tsunoda(tsunoda.atsuhiro@jaxa.jp)
- Members: Hideyo Negishi, Satoshi Ukai, Mizuho Aotsuka, Atsuhiro Tsunoda, Takashi Goto
Abstract
Design evaluation using numerical simulation is carried out for technical issues of the LE-9 engine turbo pump.
Please refer to the following URL: http://global.jaxa.jp/projects/rockets/h3/
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
In order to carry out large-scale numerical analysis of multiple cases in a short period of time and reflect those results quickly because redesign as feedbacks of engine firing test is needed.
Achievements of the Year
Lage-scale and high fidelity CFD of multiple design proposals of turbine blades has been carried out, and aerodynamic damping ratio, whice indicates the margin for flutter, has been evaluated. Quick reflection of results helped to secure the overall schedule of H3 project.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: XPFortran
- Thread Parallelization Methods: OpenMP
- Number of Processes: 20 - 960
- Elapsed Time per Case: 500 Hour(s)
Resources Used(JSS2)
Fraction of Usage in Total Resources*1(%): 8.60
Details
Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| SORA-MA | 52,316,548.39 | 9.90 |
| SORA-PP | 32,429.68 | 0.25 |
| SORA-LM | 0.00 | 0.00 |
| SORA-TPP | 60.15 | 0.01 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 3,598.80 | 3.30 |
| /data | 14,974.81 | 0.29 |
| /ltmp | 5,886.50 | 0.50 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 8.64 | 0.29 |
*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
Resources Used(JSS3)
Fraction of Usage in Total Resources*1(%): 5.48
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 29,614,573.04 | 6.37 |
| TOKI-RURI | 2,434.76 | 0.01 |
| TOKI-TRURI | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 6,085.29 | 4.17 |
| /data | 116,807.32 | 1.96 |
| /ssd | 31,058.21 | 16.22 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 8.64 | 0.29 |
*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report April 2020-March 2021